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arXiv 1707.00845hep-ph
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Valon模型中具有QED修正的部分子分布函数

Parton distribution functions with QED corrections in the valon model

Marzieh Mottaghizadeh, Fatemeh Taghavi Shahri, Parvin Eslami

摘要:

在“valon”模型的框架下,从QED $\otimes$ QCD DGPs演化方程中提取了带有QED修正的部分子分布函数(PDF).我们在这个唯象模型中对具有QED校正的PDF的结果与新相关的CT 14 QED全局拟合代码[Phys. Rev. D93,114015(2016)]和APFEL(NNPDF2.3QED)[Computer Physics Communications 185,1647(2014)]程序在广泛的$x=[10^{-5}, 1]$和$Q^2=[0.283, 10^8] \, {\rm GeV}^2$中具有良好的一致性。模型计算结果与规范计算结果吻合较好。提出了研究质子内部海夸克分布函数对称破缺的新方法。这些PDF集可以用来研究LHC时代的质子-质子散射。

英文摘要:

Parton distribution functions (PDFs) with QED corrections extracted from the QED$\otimes$QCD DGLAP evolution equations in the framework of "valon" model. Our results for the PDFs with QED corrections in this phenomenological model are in good agreement with the newly related CT14QED global fit code [Phys. Rev. D93, 114015 (2016)] and APFEL (NNPDF2.3QED) [Computer Physics Communications 185, 1647 (2014)] program in a wide range of $x=[10^{-5}, 1]$ and $Q^2=[0.283, 10^8] \, {\rm GeV}^2$. The model calculations agree rather well with those codes. We also proposed the new method for studying the symmetry breaking of the sea quarks distribution functions inside proton. Then these PDFs set can be used to explore the proton-proton scattering at the LHC era.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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